The oxidation behavior of TiAINb intermetallics with coatings at 800 C

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	The oxidation behavior of TiAINb intermetallics with coatings at 800 C
	Y. M. Xiong; S. L. Zhu; F. H. Wang
	2005
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	197 期号:2-3 页码:322-326
摘要	The discontinuous and cyclic oxidation behavior of TiAlNb intermetallics with coatings such as NiCrAlY, TiAlCr and ultrafine enamel coatings at 800 C was studied. The results indicated that the three coatings could decrease the mass gains of TiAlNb alloys during discontinuous and cyclic oxidation at 800 C. However, heavy interdiffusion occurred at the interface of NiCrAIY/TiAlNb during oxidation. Some discontinuous Al2O3 scales formed at interface of NiCrAIY/TiAlNb, where interdiffusion might be depressed. A protective Al2O3 scale could form on TiAlCr coating during oxidation at 800 C; however, the outward diffusion of Nb and inward diffusion of Cr through the interface and the formation of Al-depletion zone at the subsurface might be detrimental to the long-term oxidation resistance of coating. Enamel coating kept intact during oxidation at 800 C. But the thermodynamic instability of enamel in contact with TiAl alloys resulted in the formation of an Al-depletion zone and TiSiO3 layer at the interface of enamel/TiAlNb, which would be harmful to the adherence of the enamel coating to the substrate. (c) 2004 Published by Elsevier B.V.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;xiong, ym (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;ymxiong@imr.ac.cn
关键词	Tialnb Intermetallics Discontinuous And Cyclic Oxidation Coatings Tial-based Intermetallics High-temperature Air Titanium Aluminides Nb Addition Ti60 Alloy Resistance Corrosion
URL	查看原文
WOS记录号	WOS:000229665900026
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35157
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. M. Xiong,S. L. Zhu,F. H. Wang. The oxidation behavior of TiAINb intermetallics with coatings at 800 C[J]. Surface & Coatings Technology,2005,197(2-3):322-326.
APA	Y. M. Xiong,S. L. Zhu,&F. H. Wang.(2005).The oxidation behavior of TiAINb intermetallics with coatings at 800 C.Surface & Coatings Technology,197(2-3),322-326.
MLA	Y. M. Xiong,et al."The oxidation behavior of TiAINb intermetallics with coatings at 800 C".Surface & Coatings Technology 197.2-3(2005):322-326.